Well-drilling machine



(No Model.) 2 Sheets-Shet 1. G. ZINK.

WELL DRILLING MACHINE.

No. 483,756. Patented Oct. 4, 1892.

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(No Model.) 2. Sheets-Sheet 2.

G ZINK WELL DRILLING MACHINE.

Patented Oct. 4, 1892.

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UNITED STATES PATENT OFFICE.

GEORGE ZINK, OF CLEAR SPRING, MARYLAND.

WELL-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 483,756, dated October4, 1892.

Application filed November 23, 1891. Serial No. 412,789. (No model.)

To all whom it may concern:

Be it known that I, GEORGE ZINK, a citizen of the United States, and aresident of Clear Spring, in the county of WVashington and State ofMaryland, have invented certain new and useful Improvements inell-Drilling Machines; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, which form apart of this specification.

My invention relates to improvements in well-drilling machines.

The object of the invention is to provide means for automaticallyrotating the drill, whereby it is presented in a different position withrespect to the material being operated upon at each stroke thereof, andalso to provide means whereby the operation of rotating the drill in onedirection is automatically reversed after a certain interval of time andthe drill rotated in the opposite direction, whereby the drill-rope isprevented from kinking or twisting.

The invention consists in the novel construction and combination ofparts hereinafter fully described, and specifically pointed out in theclaims.

In the accompanying drawings, Figure 1 is a side view of a well-drillingapparatus to which my improvements are applied. Fig. 2 is an end View ofthe same. Fig. 3 is a horizontal section on the line a: :0, Fig. 1. Fig.4 is a detail view looking from the under side of the rotating hubthrough which the drill passes and the plate to which it is secured.Fig. 5 is a detail sectional view of the plate carrying the rotating huband worm-wheel by which it is actuated. Fig. 6 shows, in section and inplan, a modification of the rotating link and rope-clamping mechanism.

The mechanism for raising and lowering the drill and feeding it to itswork maybe of any ordinary or suitable construction, although I preferand have illustrated in the drawings the construction set forth in aseparate application filed by me of even date herewith, Serial No.412,788. As said construction forms no part of the present inventionandis not claimed herein, it will therefore only be necessary todescribe it generally.

In the said drawings the reference-numeral 1 designates the base of themachine mounted upon supporting-wheels 2. This base has a superimposedframe 3, in which is journaled a driving-shaft 4, having at its innerend a disk 5, provided with a crank-pin 6, which engages with a pivotedlever 7, carryinga sheave 8. Located above the driving-shaft is ashaft9, upon which the drill-rope 10 is wound. This rope passes over thesheave S on the lever, and also over a sheave 12 on the upright 13, andits free end is connected with a drill. (Not shown.) The shaft 9 carriesa pulley 15, which is connected by means of a loose belt 16 with apulley 17 on the driving-shaft. A bifurcated yoke 18, having a roller 19and handle, is pivoted to the frame in such manner that the roller canbe brought into contact with the belt, so as to tighten the same andcause the shaft 9 to be rotated, whereby the drill-rope is wound uponthe shaft and the drill removed from the well. I make no claim herein,however, to these parts. The shaft is also provided with an escapement-Wheel 21 and a pivoted escapement-lever provided with an operating-lever23, by which a step-by-step rotary movement may be imparted to the shaftfor the purpose of feeding or paying out the drill-rope.

At the front of the machine or that end adjacent to the well beingdrilled is a transverse plate 24, which is secured to the base of themachine. At a point in line with the drill this plate is provided with arecess 25 and an aperture 26. In this aperture there is fitted arotatable hub 27, having a central angular aperture or hole and providedat its upper end with an annular flange 28, which rests upon therecessed portion of the plate and is thereby held in position. In thisaperture or hole fits a two-part clamp 27, provided with verticalsemicircular grooves 27 When the two halves of this clamp are placedtogether, there will be formed a circular aperture, through which therope passes and is clamped, and the clamp rotating with the hub rotatesthe rope. To prevent any upward movement of this hub, a yoke 29, havingbifurcated arms 30 and a central bulge 31, is provided. The end of thisyoke fits under a staple 32, secured to the plate, while the bifurcatedarms embrace a loop 33, a pin 34 being passed through said loop, wherebythe hub is held in place. of octagonal or other polygonal form and fitsinto a correspondingly-shaped annular disk or worm-wheel 35, having adownwardly-projecting annular flange 36, fitting in an opening in aplate 38, secured to the lower side of the transverse plate 24. Theperiphery of this disk is formed with a series of spiral or Wormgear-teeth 39, which engage with a worm-screw 40 on a transverse shaft41, journaled in the machine-base. This shaft is also provided withscrew-threads, with which engage similar threads on an arm 42,hereinafter to be described. The shaft 41 is also provided with two fastor fixed pulley-wheels 43 and 44 and an intermediate loose oridlerpulley 45. These pulleys are connected with a pulley 46 on thedriving-shaft by a crossed belt 47 and a straight belt 48, which beltsare embraced by projecting pins or studs 49 on the transverseshifting-bar 50. This bar is capable of being shifted alternately to theright or left as the arm 42 comes in contact with one or the other ofthe pins 51 or 52 on said shifting-bar. It will be seen that theshifting-bar lies a short distance above and in the rear of the shaft41, so that the arm 4,2 will rest by gravity against said shifting- Theoperation is as follows: As the apparatus is set in motion to raise andlower the drill in its work the hub 27 is rotated by means of theworm-wheel, worm, and shaft 41, the latter being rotated by the pulleys43 and 44 and belts 47 and 48 and the pulley 46 on the driving-wheel,according to the direction in which the hub is being rotated. Suppose,for instance, the parts are in the position shown in the drawings, withthe crossed belt 47 on the fixed pulley 43 and the straight belt 48 onloose pulley 45. Then as the shaft is rotated by said pulley 44 theworm-wheel and hub will be rotated, thus rotating the drill anddrill-rod. As the shaft continues to revolve the arm 42,by means of thescrew-threads, will be fed toward the opposite end of the shaft until itstrikes the pin 51 on the bar 50, when said bar will be moved laterallyand by means of the studs will shift belt 48 onto the fixed pulley 44and belt 47 onto the loose pulley 45. The rotation of the shaft 41 willnow be reversed and the wormwheel and hub rotated in the oppositedirection, so as to unwind the drill-rope, which had been twistedpreviously. The arm 42 will then be fed back to the other end of theshaft 41, and, striking the pin 52, will again shift the belts andreverse the movement of the parts. Thus the drill will be automaticallyand alternately rotated in opposite directions, so that there will be nokinking of the drill-rope, due to twisting of the same.

In some instances the drill, instead of be- The lower portion of thishub is ing connected directly to the rope, is secured to wooden poles orbars which pass through and are rotated by the hub and worm-wheel. Thesepoles are connected with the drill-rope by means of a swivel, and it isobvious that there being no kinking or twisting of the poles there is nonecessity for rotating them in opposite directions. The rod 42 cantherefore be removed from its shaft, and the hub and worm-wheel and thepoles or bars will be rotated continuously in the same direction.

Having thus described my invention, what I claim is- 1. In awell-drilling machine, the combination, with a drill-rope and drill andmeans for raising and lowering the same, of a driving-shaft having apulley thereon, a wormshaft having screw-threads thereon, an armengaging with said screw-shaft and engaging with pins on a shifting-bar,fast and loose pulleys on said shaft connected by means of crossed andstraight belts with the pulley on the driving-shaft, and a transverseplate carrying a revoluble worm-wheel engaging with the worm-shaft, saidWheel being provided with an angular aperture and a two-part clamp forthe passage of the drill and drillrod, substantially as described.

2. In a well-drilling machine, the combination, with a driving-shafthaving a pulley thereon, a worm-shaft having loose and fixed pulleysconnected to said pulley by crossed and straight belts and provided withscrewthreads and a gravity-arm, and a shiftingbar having pins engagingwith said arm and pins engaging with the said belts, of a transverseplate having a worm-wheel engaging with said worm-shaft and having anangular opening therein and a rotatable hub having an angular peripheryfitting within said opening and a central aperture and a two-part clampfor the passage of the drill and drillrod, substantially as described.

3. In a well-drilling machine, the combination, with the transverseplate having a recess on its upper side and a circular aperture, of ahub having an angular lower end and an annular flange at its upper end,a yoke for securing said hub in place, awormwheel having an angularrecess in which said hub fits and an annular flange at its lower sidefitting in an opening in a plate secured to the under side of saidtransverse plate, a screw-threaded worm-shaft, and means for rotatingthe same, substantially as described.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

GEORGE ZINK.

Witnesses:

BENNETT S. J ONES, E. A. BROWNE.

IIO

